feat: skip two-way copy for cuda devices when decoding video wallpapers + cache wallpapers as blobs in new database

Plugins/ZShell/Internal/videoplayer.hpp

@@ -0,0 +1,87 @@
+#pragma once
+
+#include <EGL/egl.h>
+
+#include <cuda.h>
+
+#include <atomic>
+#include <functional>
+#include <mutex>
+#include <thread>
+
+#include <QSize>
+#include <QString>
+
+extern "C" {
+#include <libavcodec/avcodec.h>
+#include <libavformat/avformat.h>
+#include <libavutil/buffer.h>
+#include <libavutil/frame.h>
+#include <libavutil/hwcontext.h>
+#include <libavutil/hwcontext_cuda.h>
+#include <libavutil/pixfmt.h>
+#include <libavutil/pixdesc.h>
+}
+
+class VideoPlayer {
+	public:
+	explicit VideoPlayer(EGLDisplay display);
+	~VideoPlayer();
+
+	void setReadyCallback(std::function<void()> callback);
+	void setFrameCallback(std::function<void()> callback);
+
+	bool start(const QString& path);
+	void stop();
+
+
+	bool importCurrentFrame();
+
+	void deleteTexture();
+
+	[[nodiscard]] uint32_t textureId() const { return m_texY; }
+	[[nodiscard]] uint32_t chromaTextureId() const { return m_texUV; }
+	[[nodiscard]] int colorMatrix() const { return m_matrix; }
+	[[nodiscard]] int colorRange() const { return m_range; }
+	[[nodiscard]] QSize frameSize() const;
+
+	private:
+	void decodeLoop(const QString& path);
+	bool openDecoder(const QString& path);
+	void closeDecoder();
+
+	bool ensureTextures(unsigned w, unsigned h, int compBytes);
+
+	bool ensureCudaContext();
+
+	EGLDisplay m_eglDisplay;
+	std::function<void()> m_readyCb;
+	std::function<void()> m_frameCb;
+
+	std::thread m_thread;
+	std::atomic<bool> m_threadRunning{false};
+
+	mutable std::mutex m_mtx;
+	AVFrame* m_pending = nullptr;
+	bool m_haveFrame = false;
+
+	AVFrame* m_displayed = nullptr;
+
+	AVFormatContext* m_fmt = nullptr;
+	AVCodecContext* m_codec = nullptr;
+	AVBufferRef* m_hwDeviceCtx = nullptr;
+	int m_streamIndex = -1;
+
+	CUcontext m_cuCtx = nullptr;
+	CUgraphicsResource m_resY = nullptr;
+	CUgraphicsResource m_resUV = nullptr;
+	QSize m_texSize;
+
+	uint32_t m_texY = 0;
+	uint32_t m_texUV = 0;
+
+	int m_matrix = 1;
+	int m_range = 0;
+	int m_texComp = 1;
+	QSize m_size;
+};